:root{--ink:#20304b;--muted:#66758d;--blue:#2659a5;--blue-dark:#1a407c;--blue-wash:#edf3fd;--paper:#fff;--ground:#f5f7fb;--line:#e4e9f1;--green:#24745e;--orange:#936428;--sidebar:236px;font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);font-size:15px;line-height:1.7;font-synthesis:none}*{box-sizing:border-box}body{margin:0;background:var(--ground)}button,input,textarea,select{font:inherit}button,a,input,textarea,summary,select{-webkit-tap-highlight-color:transparent}button,a,summary{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:wait;opacity:.65}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible,select:focus-visible{outline:3px solid 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.intro{font-size:15px;color:var(--muted);margin-bottom:25px;border-bottom:1px solid var(--line);padding-bottom:22px}.reading section+section{margin-top:30px}.side-note{position:sticky;top:20px}.side-note ul{padding-left:18px;font-size:13px;color:var(--muted)}.side-note li{margin-bottom:8px}.side-note .panel{padding:19px;margin-bottom:18px}.side-note h3{font-size:14px}.source-link{display:block;padding:12px 0;border-top:1px solid var(--line);font-size:13px;line-height:1.6}.source-link:first-child{border-top:0}.source-link small{display:block;margin-top:4px;font-size:11px}.case{border:1px solid var(--line);border-radius:9px;padding:23px;margin-bottom:22px;background:white}.case .case-label{font-size:12px;color:var(--blue);margin-bottom:8px}.case h2{font-size:19px;margin-bottom:14px}.case p{font-size:14px;line-height:1.9;white-space:pre-wrap}.case ol{padding-left:21px;font-size:14px;line-height:1.95}.case 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var(--line);border-radius:7px;margin-bottom:9px;cursor:pointer;font-size:14px}.quiz-option:has(input:checked){border-color:#7296d2;background:#f1f5fd}.quiz-option input{margin-top:6px;accent-color:var(--blue)}.quiz-option.correct{border-color:#7db7a3;background:#f0f8f4}.quiz-option.incorrect{border-color:#dbb09b;background:#fff7f1}.feedback{font-size:13px;background:var(--ground);padding:13px 15px;border-radius:6px;white-space:pre-wrap;margin-top:13px}.quiz-result{padding:20px 23px;background:var(--blue-wash);border-radius:8px;margin:0 0 22px}.quiz-result strong{font-size:27px;color:var(--blue)}.quiz-result p{font-size:13px;margin:7px 0 0}.lesson-actions{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-top:25px;flex-wrap:wrap}.lesson-actions label{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted)}.lesson-actions input{accent-color:var(--blue)}.notes 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th{text-align:left;font-size:12px;color:var(--muted);font-weight:500;padding:13px 12px;background:var(--ground)}.history-table td{padding:14px 12px;border-top:1px solid var(--line)}.history-table td a{color:var(--ink)}.table-wrap{overflow:auto}.login-page{min-height:100vh;display:grid;grid-template-columns:minmax(0,1fr) minmax(400px,.8fr);background:white}.login-intro{padding:80px max(60px,10vw);background:#edf3fc;display:flex;flex-direction:column;justify-content:center}.login-intro .login-brand{display:flex;align-items:center;gap:13px;margin-bottom:55px;font-size:19px;font-weight:600}.login-brand img{width:42px;height:42px}.login-intro h1{font-size:35px;line-height:1.5;margin-bottom:20px;letter-spacing:0}.login-intro>p{color:#627590;font-size:15px;max-width:400px;line-height:1.9}.login-outline{margin-top:40px;padding-top:24px;border-top:1px solid #d7e2f3;max-width:400px;display:flex;gap:28px}.login-outline span{display:block;font-size:12px;color:var(--muted);margin-top:4px}.login-form-wrap{display:flex;align-items:center;justify-content:center;padding:50px}.login-form{width:100%;max-width:340px}.login-form h2{font-size:24px;margin-bottom:7px}.login-form>p{font-size:13px;color:var(--muted);margin-bottom:28px}.login-form .btn{width:100%;margin-top:5px}.error-line{font-size:13px;color:#a44835;min-height:20px;margin-top:12px}.login-hint{font-size:12px;color:var(--muted);margin-top:28px}.tool-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:24px}.tool-fields .field{margin-bottom:15px}.tool-fields .field span{font-size:12px}.tool-chart svg{width:100%;height:auto;display:block}.tool-values{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;padding-top:18px;margin-top:15px;border-top:1px solid var(--line)}.tool-values strong{font-size:20px;display:block;font-weight:550}.tool-values span{font-size:12px;color:var(--muted)}.tool-caption{font-size:12px;color:var(--muted);padding:5px 25px 0}.tool-warning{font-size:13px;color:var(--muted);line-height:1.9;margin-top:22px}.tool-fields .input{font-size:14px}#toast{position:fixed;bottom:25px;left:calc(50% + var(--sidebar)/2);transform:translateX(-50%) translateY(20px);opacity:0;pointer-events:none;background:#263b5a;color:white;border-radius:7px;padding:10px 18px;font-size:13px;transition:opacity .15s,transform .15s;z-index:100;max-width:min(500px,90vw)}#toast.visible{opacity:1;transform:translateX(-50%) translateY(0)}.loading-panel{padding:60px;text-align:center;color:var(--muted)}.mobile-menu{display:none}.compact-copy{font-size:12px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.breakable{overflow-wrap:anywhere}
@media(min-width:1450px){.main{padding-top:42px}.reading{padding:36px 42px}}
@media(max-width:1150px){:root{--sidebar:210px}.sidebar{padding:24px 14px 15px}.brand{padding-left:6px;gap:8px}.brand strong{font-size:16px}.topbar{padding:0 28px}.main{padding:28px 28px 70px}.intro-panel{grid-template-columns:1fr 180px}.intro-main{padding:26px}.intro-side{padding:26px 18px}.lesson-layout{grid-template-columns:minmax(0,1fr) 210px;gap:20px}.reading{padding:25px}.two-columns{grid-template-columns:1fr 1fr}.login-intro{padding:65px}.tool-layout{grid-template-columns:240px minmax(0,1fr)}}
@media(max-width:900px){:root{--sidebar:190px}.sidebar{padding:23px 12px 15px}.brand strong{font-size:14px}.brand img{width:30px;height:30px}.brand span{font-size:10px}.nav a{font-size:13px;padding:10px}.main{padding:25px 23px 65px}.topbar{padding:0 23px}.intro-panel{grid-template-columns:1fr}.intro-side{display:none}.intro-main h1{font-size:25px}.two-columns{grid-template-columns:1fr}.lesson-layout{grid-template-columns:1fr}.side-note{position:static;display:grid;grid-template-columns:1fr 1fr;gap:18px}.side-note .panel{margin-bottom:0}.resource-grid{grid-template-columns:1fr}.tool-layout{grid-template-columns:1fr}.tool-fields{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.tool-fields .field{margin:0}.login-page{grid-template-columns:1fr 1fr}.login-intro{padding:45px}.login-intro h1{font-size:29px}.login-form-wrap{padding:35px}.login-outline{gap:20px}.progress-summary{gap:12px}.progress-summary .panel{padding:17px}.progress-summary strong{font-size:24px}}
@media(max-width:650px){:root{--sidebar:0px}.sidebar{position:fixed;inset:auto 0 0;width:100%;height:65px;display:block;padding:0 7px;border-right:0;border-top:1px solid var(--line);background:#fffffff5;backdrop-filter:blur(10px)}.sidebar .brand,.sidebar-bottom{display:none}.nav{flex-direction:row;gap:0;height:100%;align-items:center;justify-content:space-around}.nav a{flex-direction:column;gap:2px;padding:7px 9px;font-size:10px;border-radius:6px;min-width:51px;line-height:1.4}.nav a svg{height:20px;width:20px}.nav a.active{background:transparent}.shell{margin:0}.topbar{height:58px;padding:0 20px}.topbar p{font-size:12px}.topbar .date{font-size:11px}.topbar .mobile-user{display:inline-flex}.main{padding:25px 18px 100px}.page-head{margin-bottom:22px;gap:12px}.page-head h1{font-size:25px}.page-head p{font-size:13px}.page-head .btn{font-size:12px;padding:8px 12px}.intro-main{padding:23px 21px}.intro-main h1{font-size:24px}.intro-main .intro{font-size:13px}.intro-main li{font-size:13px}.intro-main .eyeline{font-size:12px}.intro-main .btn{font-size:14px}.intro-panel{border-radius:9px;margin-bottom:20px}.two-columns{gap:20px}.panel{padding:20px}.week-heading{padding:16px 18px}.week-block .lesson-list{padding:0 18px}.week-heading h2{font-size:14px}.week-heading h2 span{display:block;margin-bottom:4px;font-size:11px}.week-heading .pill{font-size:11px}.lesson-row{gap:9px}.lesson-row .name{font-size:13px}.lesson-row .state{width:55px;font-size:11px}.lesson-row .day{width:33px;font-size:11px}.reading{padding:23px 20px;border-radius:8px}.reading p{font-size:14px;line-height:1.95}.reading h2{font-size:18px}.lesson-tabs{gap:0;margin:0 -2px 20px}.lesson-tabs button{padding:11px 13px;font-size:13px}.side-note{grid-template-columns:1fr}.case{padding:20px}.case h2{font-size:18px}.case p,.case ol{font-size:13px}.filters{gap:9px}.search{max-width:none;min-width:100%}.filters select{width:130px;font-size:13px}.resource-card{padding:20px}.resource-card h2{font-size:16px}.progress-summary{grid-template-columns:repeat(3,1fr);gap:8px}.progress-summary .panel{padding:14px 12px}.progress-summary strong{font-size:23px}.progress-summary span{font-size:10px}.history-table{font-size:12px;min-width:440px}.table-wrap.panel{padding:9px}.login-page{display:flex;flex-direction:column;min-height:100vh}.login-intro{padding:35px 29px}.login-intro .login-brand{margin-bottom:25px;font-size:17px}.login-brand img{width:33px;height:33px}.login-intro h1{font-size:28px;margin-bottom:12px}.login-intro>p{font-size:13px;margin-bottom:0}.login-outline{display:none}.login-form-wrap{padding:32px 29px 45px;flex:1;align-items:flex-start}.login-form{max-width:none}.login-form h2{font-size:21px}.login-form>p{margin-bottom:20px}.tool-fields{grid-template-columns:repeat(2,1fr)}.tool-values{gap:9px}.tool-values strong{font-size:17px}.tool-values span{font-size:11px}.tool-caption{padding:5px 0}.tool-chart.panel{padding:16px}.quiz-option{font-size:13px}.quiz-question legend{font-size:14px}.notice{font-size:12px;padding:12px 14px}#toast{left:50%;bottom:80px}.save-line{margin:8px 0 0;display:block}.lesson-actions{align-items:stretch}.lesson-actions .btn{flex:1;font-size:12px}.page-head .row{justify-content:flex-end}.topbar .logout-small{font-size:11px}.breakable{font-size:12px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media print{.sidebar,.topbar,.lesson-tabs,.side-note,.lesson-actions,#toast{display:none}.shell{margin:0}.main{padding:0}.lesson-layout{display:block}.reading,.case{border:0;padding:0}.case{break-inside:avoid}body{background:white}.reading p{font-size:11pt}}
/* Learning route, retrieval practice, and one-question quizzes. */
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@media(max-width:900px){.guide-priorities{grid-template-columns:1fr}.review-list{grid-template-columns:1fr}}
@media(max-width:650px){.guide-levels{grid-template-columns:1fr}.guide-levels,.guide-priorities{gap:14px}.daily-schedule li{grid-template-columns:68px minmax(0,1fr);gap:10px}.daily-schedule .pill{font-size:11px}.daily-schedule p,.guide-fact p{font-size:13px}.nav a{flex:1;min-width:0;padding:7px 2px}.review-panel{padding:18px}.review-row{padding:12px}.quiz-step{gap:8px}.evidence-box{padding:14px}.teachback-rubric summary{font-size:13px}}